Yes. Puerto Iguazu sits right next to Parque Nacional Iguazú, close enough that a single well-planned day covers the falls without needing a hotel in town. Most travelers arrive in the morning, move between the circuits and Devil's Throat over several hours, and are back at their starting point by evening. It's the park's proximity to Puerto Iguazu that makes this workable as a same-day visit rather than a multi-day trip.
Plan for at least half a day, ideally 4 to 6 hours, inside Parque Nacional Iguazú. The park is split into the Upper Circuit, Lower Circuit, and the Garganta del Diablo train and walkway, and each offers a different vantage point on the falls. Rushing through in an hour or two means missing most of it. A private transfer gets you to the park early and picks you up on your schedule, so you're not boxed in by a group tour timetable.
The falls deserve most of your day, but Hito Tres Fronteras, the landmark where Argentina, Brazil, and Paraguay meet along the Iguazu and Parana rivers, sits just minutes from Puerto Iguazu and only takes a short stop to see. Beyond that, most travelers keep the day centered on the park itself, since the falls alone fill the hours. If you want the tri-border viewpoint too, it pairs easily as a quick add-on before or after your falls visit.
The path is flat and paved, running along a series of catwalks over the river, but it does involve sustained walking and standing in humidity and spray near the falls. Comfortable closed-toe shoes, light clothing, and a way to keep your phone or camera dry are worth packing. There's no strenuous climbing, so the walk suits most fitness levels and ages.
Start with Garganta del Diablo first thing in the morning, when the boardwalk is coolest and least crowded, since it requires a short train ride to reach. From there, tackle the Lower Circuit for close-up views and mist from below, then the Upper Circuit for wide, elevated views across the whole falls system. Doing them in this order keeps walking distances manageable and avoids backtracking across the park.
The Argentine side puts you inside the falls, not just in front of them. Walkways and catwalks lead directly over the rapids, culminating at Garganta del Diablo (Devil's Throat), where you stand right above the thundering main cascade. The Brazilian side is known for its sweeping panoramic views across the canyon, while Parque Nacional Iguazú on the Argentine side is built for an up-close, immersive walk through the falls themselves. Many travelers do both, but if you only have one day, the Argentine park delivers the more hands-on experience.
